Loose-leaf book.



J. W. MYATT- LOOSE LEAFBOOK.

APPLICATJON FILED FEB. 12. 1915.

Patented Oct. 26, 1915.

' FT p INVENTOH John WiHiamM fi' ATTORNEYS O.. WASHINGTON D c this purpose the invention comprises the was wanna anna s.

TIETON', ENGEILAITDI ivilann lissfeivoit 'ro renames name, or

rehearse BOOK.

assess. a Leas-Israeli.

Patented-cease, iaia hiiplication'filed february 12, 1615. Serial No. 7,663.

Leaf Books, of which the following is a specification. y

This invention relates? to loose leaf bobks of the type in which the leaves are notcl'red at the rear edge and 'sli'pped over, one or more ,retaining members ,situated trans.

versely across the back of the book, the leaves being. securedi'n position by;. ,c1am ing mechanism which presses tightly upon the rear edges of the leaves. With this type of book some inconvenience is'eXperienc'ed in inserting and removing the leavs owing to the fact that the notches in the leaves are narrower at their extremeout er ends than at the parts which engage the transverse retaining members in the back of the book when in the proper position. V v

The ob 'ect of the present invention is to avoid the aforesaid inconvenience, and for employment of one or more flexible transverse retaining members in the back of a loose leaf book which at a convenient position are each formed with a narrow part over which the narrow portions of the notches in the leaves can freely pass, and the arrangement of the said retaining members so that there can be imparted to them a longitudinal movement whereby their narrow portions can be carried into alinement with or away from the notches in the leaves.

Referring to the accompanying sheet of explanatory drawings :-Figure 1 is a transverse section, Fig. 2 a plan and Fig. 3 a longitudinal section, illustrating diagrammatically a loose leaf book provided with retaining members in accordance with this invention.

In carrying the invention into effect as shown in the drawings, a pair of leather or other flexible retaining strips on are attached to the hinged covers Z) of a loose leaf book. Preferably the strips are connected at one end by a piece as 0 by which they can be moved across the back of the book. The strips are retained by guides as d. If desired both ends of the strips may be connected, and also means such as screw mechanism may be provided in one or both covers for sliding the strips. In the arrangement shown the sliding is effected by hand through the medium of the cross or connecting p ece 0; For about one half their length the strips are narrower than at the other parts, the width of the narrow parts being equal or'slightly less than the width of the narrower portions 0 of the notches in the rear edges of the leaves 7, and the width of the broader parts of thestrips being equal to or rather less than that of the broader parts ,9 of the notches in the leaves. To detach the leaves the strips are moved longi tudinallyin the direction which brings thelr narrower porti'ons adjacent to the rear edges of .the leaves as shown by the dotted lines in Figs. 1 and 2. The latter can then be very conveniently inserted or removed. Tojsecuretthe leaves the strips are moved back ,to the original position as shown by full lines in the drawings when their broader parts engage the broader, parts of the leaf notches, and, the clampingmechanism is then actuated, for gripping theleaves. Any convenient clamping mechanism is employed: That i'llustr'ateddiagrammatically in the drawings comprises a known arrangement of two clamping bars h combined with a back piece 2' and screw mechanism (not shown) for actuating the clamping bars. This construction forms no part of the present invention.

To prevent accidental falling out of the leaves during the operation of insertion and withdrawal of the leaves, the short narrow portion e of each notch which extends from the broad portion 9 of the notch at one end to the rear edge of the leaf at the other end is situated at one end of the broad portion of the notch. In other words each notch is made to an L shape in which one part lies parallel with the rear edge of the leaf and the other lies transversely to that edge as shown. Before the narrow portion of the notch can he slipped over the narrow portion of the strips in the back of the book the sheet must have imparted to it a sliding movement parallel to the rear edge of the leaf. Consequently while the leaves occupy their normal positions the strips always engage the notches in the leaves, and the leaves cannot accidentally fall away from the strips, but when the leaves which it is desired to remove are slid transversely to 2O a reduced portion over which the narrow parts of the leaf notches can pass, and means forxattachmg the said member to the covbe taken out. la-shaped notches have previously been proposed and I make no general claim thereto.

V The invention is not limited to the constructional details herein. described, as these ments.

' Having thus described invention what I claim as new and desire to secure by Letters Patent is:' p I 1. Thecombinationwith the covers of a loose leaf book and leaves contained thereinprovided attheir rear edges with notches which are narrower at the outer parts'than parts of the leaf notches and formed with ers, which means permit a sliding movement of the member 1n the-dlrectlon of its "length and :enable the reduced portion of the memberto be moved opposite or away from the narrow parts of the leafnotches,

substantially as described. Y

V loose leaf book and leaves contained therein provided at their rear edges with notches which are narrower at the outer parts than the inner parts, of a plurality of flexible retaining members connected to each other at one end and each formed with a reduced portion over which the narrow parts of the leaf notches can pass, the broader portions of the members being adapted to pass through the broad parts of the notches, and guides secured to the insides of the covers, which guides serve to attach the members to the covers and permit a sliding movement to be imparted to the said members in the maybe varied to meet different requiredirection of their length for enabling the narrow portions ofthe members to be moved opposite or away from the narrow parts of the leaf notches, substantially as described.

8. inc combination with the covers of a loose leaf book and leaves contained therein provided at their rear edges with L-shaped notches, of a pair of flexible retaining members secured together at one end and formed at the other end with reduced parts over which the narrow parts of the leaf notches can pass, the remainder of the members being adapted to pass through the broad parts of the notches, and guides attached to the covers and adapted to retain the members in position while permitting a sliding movement of the members in the direction of their length whereby their reduced portions can be moved opposite or away from the narrow parts of the leaf notches, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

- 7 JOHN WILLIAM MYATT.

Witnesses:

JOHN MORGAN, FRANCIS MALPAS.

- Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

. Washington, I). C. 

